Travis config including 1.8.7, 1.9.2, 1.9.3, and JRuby.

.travis.yml

+rvm:
+  - 1.8.7
+  - 1.9.2
+  - 1.9.3
+  - jruby-19mode
+gemfile:
+  - Gemfile
+  - gemfiles/Gemfile.mongoid-2.4.x
+env: SSL_CERT_DIR=/etc/ssl/certs
+matrix:
+  exclude:
+    - rvm: 1.8.7
+      gemfile: Gemfile
+      env: SSL_CERT_DIR=/etc/ssl/certs
+    - rvm: 1.9.2
+      gemfile: Gemfile
+      env: SSL_CERT_DIR=/etc/ssl/certs
+    - rvm: 1.9.3
+      gemfile: gemfiles/Gemfile.mongoid-2.4.x
+      env: SSL_CERT_DIR=/etc/ssl/certs
+    - rvm: jruby-19mode
+      gemfile: gemfiles/Gemfile.mongoid-2.4.x
+      env: SSL_CERT_DIR=/etc/ssl/certs 

gemfiles/Gemfile.mongoid-2.4.x

+source "http://rubygems.org"
+
+gemspec :path => '..'
+
+group :development, :test do
+  gem 'rake'
+  gem 'mongoid', '2.4.11'
+  gem 'bson_ext', :platforms => :ruby
+
+  gem 'rails'
+
+  platforms :jruby do
+    gem 'jruby-openssl'
+  end
+end

test/test_helper.rb

@@ -273,12 +273,9 @@ class Test::Unit::TestCase
   end
 
   def is_nan_coordinates?(coordinates)
-    if defined?(::Float::NAN)
-      coordinates == ([ Geocoder::Calculations::NAN ] * 2 )
-    else
-      return false unless coordinates.respond_to? :size 
-      coordinates.size == 2 && coordinates[0].nan? && coordinates[1].nan?
-    end
+    return false unless coordinates.respond_to? :size # Should be an array
+    return false unless coordinates.size == 2 # Should have dimension 2
+    coordinates[0].nan? && coordinates[1].nan? # Both coordinates should be NaN
   end
 end